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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 150 · 40 sums
TalentJR

The method (Flip and multiply): a/b × c/d = (a × c)/(b × d), then simplify. A whole number n is n/1. a/b ÷ c/d = a/b × d/c. Decimal × decimal: multiply as whole numbers; the answer has as many decimal places as both numbers together — 1.2 × 0.3 = 0.36. Decimal ÷ decimal: multiply both by 10 (or 100) first — 2.4 ÷ 0.6 = 24 ÷ 6 = 4.

NameDateTime takenScore ___ / 40
  1. 1.1.8 × 0.3 =
  2. 2.1/6 × 6 =
  3. 3.1.9 × 0.6 =
  4. 4.1.5 ÷ 0.3 =
  5. 5.1.2 × 0.2 =
  6. 6.1.4 × 0.9 =
  7. 7.3/7 ÷ 1/4 =
  8. 8.One bag of potatoes weighs 5.2 kg. How many kg do 7 of them make in all? =
  9. 9.3.6 ÷ 0.6 =
  10. 10.One packet of rice weighs 9.3 kg. How many kg do 11 of them make in all? =
  11. 11.28.72 ÷ 4 =
  12. 12.3.9 × 0.6 =
  13. 13.1/5 × 8 =
  14. 14.One roll of ribbon has 9.6 m. How many m do 5 of them make in all? =
  15. 15.One roll of ribbon has 3.3 m. How many m do 8 of them make in all? =
  16. 16.0.92 ÷ 2 =
  17. 17.3/7 × 5/8 =
  18. 18.3/5 × 8 =
  19. 19.0.7 × 0.9 =
  20. 20.9.6 ÷ 0.8 =
  21. 21.2.8 ÷ 0.4 =
  22. 22.2.6 × 0.2 =
  23. 23.1/5 × 15 =
  24. 24.8/9 × 5/9 =
  25. 25.0.6 ÷ 0.3 =
  26. 26.2.4 ÷ 0.6 =
  27. 27.6.3 ÷ 0.7 =
  28. 28.26.6 ÷ 5 =
  29. 29.7/8 × 1/4 =
  30. 30.3/4 × 15 =
  31. 31.5.2 × 0.2 =
  32. 32.9.9 × 0.5 =
  33. 33.3/4 ÷ 3/5 =
  34. 34.1/9 × 3/4 =
  35. 35.6.1 × 0.6 =
  36. 36.1/9 × 8 =
  37. 37.1/3 × 1/2 =
  38. 38.4/7 ÷ 7/9 =
  39. 39.2.4 × 0.4 =
  40. 40.1/8 × 1/5 =

Answer key

  1. 0.54
  2. 1
  3. 1.14
  4. 5
  5. 0.24
  6. 1.26
  7. 12/7
  8. 36.4
  9. 6
  10. 102.3
  11. 7.18
  12. 2.34
  13. 8/5
  14. 48
  15. 26.4
  16. 0.46
  17. 15/56
  18. 24/5
  19. 0.63
  20. 12
  21. 7
  22. 0.52
  23. 3
  24. 40/81
  25. 2
  26. 4
  27. 9
  28. 5.32
  29. 7/32
  30. 45/4
  31. 1.04
  32. 4.95
  33. 5/4
  34. 1/12
  35. 3.66
  36. 8/9
  37. 1/6
  38. 36/49
  39. 0.96
  40. 1/40

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